In some of the longleaf pine woodlands of South Carolina, it’s been more than sixty years since the land has felt a plow. A casual observer hiking through this regrown forest would have a hard time telling that it was ever cultivated for crops. But the ecological impacts of agriculture and other land uses linger — perhaps longer than anyone had ever thought before. University of Wisconsin ecologists Philip Hahn and John Orrock just completed an extensive study of the long-term impacts of agriculture and published their results in the Journal of Animal Ecology. Phillip Hahn joined the Buzz on Monday December 29th.